Biology Spring Final

Which of the following is an example of a decomposer?

• a) Larus canus (a seagull)
• b) Xiphias gladius (a swordfish)
• c) Bradypus tridactylus (a three-toed sloth)
• d) Amanita phalloides (a death cap mushroom)

If oxygen is present, what type of respiration takes place?

• a) Aerobic
• b) Anaerobic
• c) Fermentation
• d) No respiration takes place

What is the primary energy source for most living things?

• a) Photosynthesis
• b) Chemosynthesis
• c) The sun
• d) Radioactive isotopes found in the Earth’s crust

Finish the sentence: Evolution does not impact individuals of a species, it impacts _______ _______________ ________________.

• a) The entire species.
• b) Nothing but bugs.
• c) Half the species.
• d) Naturally made lakes.

The geographic isolation of two populations of a species tends to increase differences between their gene pools because it:

• a) Prevents interbreeding between the populations.
• b) Prevents interbreeding within each population.
• c) Causes temporal isolation of the two populations.
• d) Increases differences in courtship behavior.

Nutrients move through an ecosystem in:

• a) Biogeochemical cycles
• b) Water cycles
• c) Pyramids of energy
• d) Ecological pyramids

The separation of populations by barriers such as rivers, mountains, or bodies of water is called:

• a) Temporal Isolation
• b) Geographic Isolation
• c) Behavioral Isolation
• d) Genetic Isolation

Molecular evidence in support of natural selection includes:

• a) The nearly universal genetic code.
• b) The presence of vestigial structures.
• c) A tendency toward perfect, unchanging DNA in various species.
• d) The transmission of acquired characteristics by DNA.

Charles Darwin called the ability of an organism to survive and reproduce in its specific environment:

• a) Diversity
• b) Fitness
• c) Adaptation
• d) Evolution

If a mutation introduces a new skin color in a lizard population, which factor might determine whether the frequency of the new allele will increase?

• a) How many other alleles are present.
• b) Whether the mutation makes some lizards more fir for their environment than other lizards.
• c) How many phenotypes the population has.
• d) Whether the mutation was caused by nature or by human intervention.